Diaphragm for car-vestibules or the like.



No. 758,697. PATENTBD MAY 3, 1904. W. M. SALISBURY.

DIAPHRAGM FOR GAR VBSTIBULES 0R THE LIKE.

APPLIGATION FILED rma. 29. 1904.

1ro MODEL.

M @f5 y' dvzejis'.

UNITED STATES IVARREN M. SALISBURY,

Patented May 3, 1904.

OF CHICAGO, ILLINOIS.

DIAPHRAGNI FOR CAR-VESTIBULES OFi THEiLlKE.

SPECIFICATIOIY. forming part of Letters Patent No. 758,697, dated May 3,1904. Application filed February 29,1904. Serial No. 195,773. (N0model.)

Be it known that l, HEREN M. SALIsUaY, a citizen of the United States,residing at Chicago, in the county of Cook and State of lllinois, haveinvented a certain new and useful Improvement in Diaphragms forCar-Vestibules or the Like, of which the following is a spceiiieation.

My invention relates to diaphragms for earvestibules and the like, andparticularly to means for permitting them to be trimmed so as to be ofdifferent lengths without leaving their lower ends unfinished.

One form of my invention is illustrated in the accompanying' drawings,wherein Figure I is a side elevation of a portion of the diaphragm; Fig.2, a cross-section on the line 2 2 of Fig. 1; Fig. 3, an enlarged detailof one end of one section of the diaphragm with parts broken away, andFig'. 4 is an end view from below.

Like parts are indicated by the same letter in all the figures.

A A are strips of any desired material forming' the vertical and topsections of the diaphragm. They may be connected in any desired mannerat the corners.

B B are strips of edging-as, for example, of leather-to form the inneredges of these diaphragm-sections and to secure them together at theirinner edges.

C is a piece of material, preferably rubber, having on its two sidesshort strips of belting or the like D D. The rubber of these endportions is somewhat shorter than the side pieces, as indicated in Fig'.3, so that when the end piece stands alone it presents at its upper edgea slot-like portion, the bottom of which is the upper edge ofthe rubberand the sides of which are the upper ends of the side pieces. Into oneof these slots the diaphragm-section A is inserted. The edging' B isthen folded over the diaphragm-section, including such end piece, andhere the parts are secured together. They may be fastened by thestitching E E or by the rivets F and G, or both. The rubber piece willbe two or three inches long, though, of course, its length can vary atthe will of the constructor. The edging', of course, need not extendbeyond the diaphragm-section A, and

the extension, composed of the parts D and C, might be otherwiseconstructed-as, for example, the parts D D need not extend to the bottomof the part C, and under certain conditions, perhaps, one of the partsl) could be omitted. The stiifening, such as the parts C, might beapplied more directly to a lower extension of the section A.

The size, proportion,and particular arrangement of the several parts maybe greatly varied without departing from the spirit of my invention, andI do not wish to be limited to any particular materials, as they can bevaried to suit the requirements of any particular case.

In the use of diaphragms of this g'eneral character it is well-nighimpossible to have the diaphragm of proper length to suit the positionin which it is to be used. This is due to various reasons not necessaryhere to be gone into; but the fact is that when a diaphragm is about tobe applied to the car it is almost invariably found necessary to varyits length slightly. To allow for this, the practice is to have thediaphragms a little longer than is likely to be necessary. Theworkmanamilying them then cuts them off. He removes enough material togive the diaphragm the exact desired length. This leaves the diaphragmwith a frayed lower edge. Moreover, the diaphragm at its lower edgeshould have some kind of binding or stiffening, and if this be put on itis likely to be cut off in. the process of thus shortening thediaphragm. lith my improvement the rubber end is long enough to suit allordinary conditions, and the user can cut off much or little, and solong as he does not remove the whole of the rubber the lower end of thediaphragm will be provided with a stilfening and will bein a finishedcondition and not liable to be frayed. He may eut, for example, if,rivets be used at any one of the points indicated by the dotted linesbetween the rivets. If rivets are not used, the stitching' should besuch as not to easily unravel.

l. A diaphragm for car-vestibules or the like comprising a series ofdiaphragm-seetions, a series of end pieces, one for each section, and aseries of binding'- strips which 3. A diaphragm for car-vestibules orthe like comprising a series of diaphragm-sections, a series of endpieces, one for each section, a series of binding-strips which unite4two adjacent sections and end pieces along their edges, andedging-strips to secure the diaphragm-sections and end pieces togetherin pairs.

4. In a diaphragm for car-Vestibules or the like, the combination ofaseries of diaphragmsections with endv extensions of a stiffeningmaterial, said extensions of a length to permit sections to be cut oil?,and means for securing the several diaphragm-sections together in pairs.

WARREN M. SALISBURY. l/Vitnesses:

HOMER L. KRAFT, PE'RCIVAL W. TRUMAN.

